Improved composition for lining barrels



PATENT OFFIC ALPHEUS G. DUNN, OF N YORK, N. Y.

IMPROVED COMPOSITION FOR LINI NG BARRELS.

Specification forming part of Letters Patent N 0. 55,073, dated May 29, 1866 To all whom it may concern:

Be it known that I, ALPHEUS G. DUNN, of 131 West Eighteenth street, in the city, county, and State ofNeW York, have invented anew Composition for Coating the Interiors of Barrels for containing petroleum,turpentine, benzme, naphtha, alcohol, and other liquids ot'similar penetrating character; and I do hereby de-' clare that thefollowingis afull, clear, and exact description of the component parts of and modes of compounding and using the same.

My invention consists in a composition of gum-copal, linseed-oil, and alkali, either with or without glue. For coating barrels for containing alcohol I take aboutthree(3) parts, by weight, of gum-eopal, melt it by subjecting it to a suitable beatsay about 750 Fal1renheitand while in the melted state add about eight similar parts, by weight, of the boiled linseed-oil used by painters, and stir till this mixture has cooled sufficiently to allow an aqueous solution to be added to it. I then add of an aqueous solution of potash or soda of the strength of 3 Baum a quantity equal to about one sixteenth part of the weight of the mixture of gum-copal and linseed-oil, and stir the whole together till thoroughly mixed.

The barrels are coated with this compound by heating it to nearly a boiling temperature and pouring about two gallons through the bung-hole of each barrel'of ordinary size, putting in the bung, and rolling the barrel over in all directions till every part of the interior is thoroughly covered, when the bung may be removed and the surplus composition, if there be any, is poured out. As soon as the composition is dry the barrel is ready for use, and is impervious to alcohol.

For coatin gbarrels for containing petroleum I take the mixture of three (3) parts, by weight, of gum-eopal, and eight(8) similar parts of boiled liuseed-oil, mixed as hereinabove described, and add of the aqueous solution of potash or soda hereinabove specified,- in a boiling state,

a quantity about equal in weight to twice the whole weight of the gum-copal and boiled linseed-oil. I also take of glue about the same quan tity as above specified of gum-copalviz., three (3) parts by \veightand boilit in about thirty-two (32) similar parts, by weight, of the above-specified aqueous solution of potash or soda.

linseed-oil, and solution ot'soda or pot-ash while the two solutions are at a boiling, or nearly boiling, temperature, and while at such templied with advantage to barrels which have been prepared by the process of Louis S. Robbins, patented May 3, 1864, the preparation by such process contributing to the successful action of my composition.

1 do not limit myself to the'proportions herein specified of the several ingredients used in my composition, as these proportions may be varied in some degree Without materially impairing its efficiency but I have specified the proportions which, all things considered, Ibelieve to be the best.

What I claim as my invention, and desire to secure by Letters Patent, is-

A composition, substantially as herein described, of gum-copal, boiled linseed' oil, and

an aqueous solution of soda or potash, either with or without glue.

Airlines 0. DUNN.

Witnesses:

HENRY T. BROWN, ELLIS D. LAZELL.

I then mix this quantity of alkaline "solutionof glue'with the above-mentioned quantity of the mixture of gum-copal, boiled 

